EVALUATION OF SEISMIC INDUCED WALL PRESSURES FOR DEEPLY EMBEDDED NPP STRUCTURES.
The extent to which finite element models of partially buried nuclear power plant structures may be used to compute seismic induced wall pressures is investigated in this paper. Stresses in three dimensional finite elements modeling the soil adjacent to the structure are used and stresses in these elements are used to evaluate wall pressures. Depths of burial of the structure varying from 1/4 to 1 times the height of the structure are considered. The SASSI computer code is used to perform the analyses. The wall pressures for the shallower depths of burial are found to depend on the inertial interaction loads, while the pressures for the deeper embedded structures are found to depend on kinematic interaction loads. The input ground motion for the study has a ZPA equal to 0.3 g. The maximum wall pressures are examined to determine whether non linear effects (separation of the wall and soil or slippage of the soil relative to the wall) are important. Non-linear effects are found to occur for depths of burial less than one half of the height and are found to occur over one half of the buried depth.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY (US)
- Sponsoring Organization:
- DOE/NRC (US)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 15016070
- Report Number(s):
- BNL-NUREG-73845-2005-CP; R&D Project: Y-6718 (15325); 40-100-1060; TRN: US0501836
- Resource Relation:
- Conference: 18TH INTL. CONFERECNE ON STRUCTURAL MECHANICS IN REACTOR TECHNOLOGY (SMIRT 18), BEIJING (CN), 08/07/2005--08/12/2005; Other Information: PBD: 30 Mar 2005
- Country of Publication:
- United States
- Language:
- English
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